Textile Science and Engineering (한국섬유공학회지)

The Korean Fiber Society (한국섬유공학회)
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Characterization of Poly(trimethylene terephthalate) Nanofibrous and Microfibrous Web

Poly(trimethylene terephthalate) 나노 섬유 웹과 마이크로 웹의 특성분석

  • Kang, Yun-Ok (Department of Nano Technology, Chungnam National University) ;
  • Park, Cho-Hee (Department of Advanced Organic Materials and Textile System Engineering) ;
  • Nam, Young-Sik (Institute of Chemical and Biological Engineering, Chungnam National University) ;
  • Kim, Jin-Hong (The Huvis R&D Institute) ;
  • Park, Won-Ho (Department of Advanced Organic Materials and Textile System Engineering)
  • 강은옥 (충남대학교 나노기술학과) ;
  • 박초희 (충남대학교 유기소재.섬유시스템 공학과) ;
  • 남영식 (충남대학교 바이오응용화학연구소) ;
  • 김진홍 (휴비스 R&D센터) ;
  • 박원호 (충남대학교 유기소재.섬유시스템 공학과)
  • Received : 2010.11.01
  • Accepted : 2010.11.26
  • Published : 2010.12.31
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Abstract

A nanofibrous web was fabricated by electrospinning poly(trimethylene terephthalate)(PTT). The PTT web with an average diameter of 290 nm was obtained by electrospinning from a 16%(w/v) PTT solution, whereas a PTT film was obtained from solution casting. The water contact angle of the PTT web was much higher than that of the PTT film because the web had a nanofibrous structure with a high surface area and surface roughness. The PTT film crystallized isothermally in the temperature range of $182-231^{\circ}C$ and exhibited a multiple melting phenomenon. The degrees of crystallinity of the PTT film and PTT web were 59.2 and $38.7^{\circ}C$ respectively. The crystallinity of the PTT web was lower than that of the PTT film because the web solidified rapidly by fast solvent evaporation during electrospinning. To increase the thickness of the web, the spinning solvent was changed to 1,1,1,3,3,3-hexafluoro-2-propanol (HFIP). As a result, a nanofibrous web with average diameter of 900 nm and thickness of 0.36 mm was obtained under the same electrospinning conditions. The overall porosity of the nanofibrous web was higher than the microfibrous web. The tensile strength and tear strength of the microfibrous web was higher than those of the nanofibrous web, whereas the breaking elongation of the nanofibrous web is higher than that of the microfibrous web.

Keywords

References

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